# All files / src/chap04 FormCheck.js

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     import { useState } from 'react';

    export default function FormCheck() {
      // State 초기화
      const [form, setForm] = useState({
        agreement: true
      });

      // 체크박스 변경 시 입력값 State에 반영
      const handleFormCheck = e => {
        setForm({
          ...form,
          [e.target.name]: e.target.checked
        });
      };

      // [보내기] 버튼 클릭 시 입력값 로그 출력
      const show = () => {
        console.log(`동의 확인: ${form.agreement ? '동의': '동의하지 않음'}`);
      };

      return (
        <form>
          <label htmlFor="agreement">동의합니다:</label>
          <input id="agreement" name="agreement" type="checkbox"
            checked={form.agreement}
            onChange={handleFormCheck} /><br />
          <button type="button" onClick={show}>보내기</button>
        </form>
      );
    }